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A063964 Numbers n such that n and n+1 have the same sum of square-free divisors, or sqf(n)=sqf(n+1), where sqf(n) = A048250(n). +0
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11, 14, 224, 957, 1334, 1634, 2685, 9347, 13915, 16260, 20145, 20335, 33998, 37236, 42251, 42818, 51624, 55308, 56419, 56975, 71874, 74918, 77748, 79824, 79826, 79833, 84134, 93632, 106600, 111506, 120680, 122073, 138237, 142116, 147454 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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